zmq cannot work on windows xp

[myhevenisqing]

It was already fixed a while ago:

https://github.com/zeromq/libzmq/blob/master/src/ip_resolver.cpp#L584

Originally posted by @bluca in #3693 (comment)

sorry,i tryed the newest code, is still not fix zmq work on window xp. due to windows xp is not support the if_indextoname.

[sigiesec]

Can you provide more details on this? What are you doing? Are you experiencing problems building on Windows XP, or are you using a DLL built on a newer Windows version on Windows XP?

[myhevenisqing]

i use zeromq dll on work on windows xp sp3,but crash about: if_indextoname unable to locate program input point in IPHLPAPI.DLL

[myhevenisqing]

i bulid dll on window 10, but need work on window xp.

[bluca]

You need to build it on windows xp if you want to use it on windows xp

[sigiesec]

@bluca That shouldn't be necessary. The target SDK version can already be specified by setting the CMake variable ZMQ_WIN32_WINNT, but this particular guard uses a custom define ZMQ_HAVE_WINDOWS_TARGET_XP which was set only from the deprecated

libzmq/builds/deprecated-msvc/vs2015_xp/platform.hpp

Line 5 in 92e3226

#define ZMQ_HAVE_WINDOWS_TARGET_XP

, but is never set via CMake. This must be fixed.

@myhevenisqing For the moment, can you please try to edit the CMakeLists.txt file locally and add add_definitions(-DZMQ_HAVE_WINDOWS_TARGET_XP) there? Then you should be able to build on Windows 10 and run on Windows XP.

[myhevenisqing]

@sigiesec in my job,i build zeromq dll in vs2010. so,I'm afraid that won't work .

[sigiesec]

@myhevenisqing You use CMake to generate a VS solution, don't you?

[sigiesec]

@myhevenisqing It turned out there were a few more incompatibilities with Win XP. With the changes in #3716, these will be fixed. You can then generate a VS solution that target Win XP by running cmake -DZMQ_WIN32_WINNT=0x501 -G "Visual Studio 10 2010" <libzmq source folder>. Use Visual Studio 10 2010 Win64 instead of Visual Studio 10 2010 for a 64-bit library.